Greenwich Granny Flat Builder — Local, Fixed-Price
Buildana builds granny flats across Greenwich 2065 from our Fairfield office. Typical Greenwich rental yield: $650–$900/week. Free site assessment.
HIA Member
MBA NSW0476 300 300Quick Answer
A granny flat in Greenwich costs $150,000–$300,000+ depending on size and finishes. 1-bed from $150K, 2-bed from $200K. CDC fast-track approval in 10–15 business days. Buildana manages design, Lane Cove Council approval and fixed-price construction.
Greenwich Granny Flat Construction — Fixed Price
A granny flat in Greenwich is a premium, harbour-driven build. On 500 to 1,200m² blocks worth $3.5M to $8M on the peninsula between Greenwich Point and Manns Point, a secondary dwelling is guest accommodation, a studio or multigenerational space — the larger lots clear the 450m² Housing SEPP threshold comfortably, so size is rarely the question.
Heritage and site are. Heritage Conservation Areas cover most streets, so a secondary dwelling almost always goes through a full DA rather than the fast CDC path. And the sandstone-dominant ground with substantial harbour fall means engineered slabs, retaining and often rock excavation, scoped off a real geotech before design.
So I scope the heritage and the fall first. On these blocks it's architect-led work, built to sit properly with the main house and the harbour outlook.
We build to that standard, fixed-price, licence HBL 487805C.
Buildana manages the full granny flat process in Greenwich — from site assessment and CDC fast-track approval through to fixed-price construction and handover. We build studio, 1-bedroom, and 2-bedroom designs up to the NSW maximum of 60m².
Read our Complete Granny Flat Guide or explore granny flat builds across Sydney.
- Granny flats in Greenwich from $150K
- CDC fast-track approval (10–15 business days)
- 500–1,200m² blocks — most qualify for 60m² granny flat
- Greenwich zoned R2 Low Density / R3 Medium (Lane Cove village)
- Fixed-price contract — design to handover
- M — engineered slab included
- Rental yield $650–$900/week in Greenwich
- Free site assessment — near Wollstonecraft (1.5 km, ferry) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Harbour-driven, premium
On 500 to 1,200m² blocks worth $3.5M to $8M, a Greenwich secondary dwelling is guest accommodation, a studio or multigenerational space — the larger lots clear the 450m² Housing SEPP threshold comfortably.
The direct harbour outlook carries the premium, so the dwelling is built to suit the address.
Heritage and harbour fall
Heritage Conservation Areas cover most streets, so a secondary dwelling almost always goes through a full DA — scoped first.
Sandstone ground with substantial harbour fall means engineered slabs, retaining and often rock excavation off a real geotech.
Granny flat builder in Greenwich — key facts
- Suburb
- Greenwich, NSW 2065
- Council / LGA
- Lane Cove Council (Lane Cove)
- Primary zoning
- R2 Low Density
- Typical lot size
- 500–1,200m²
- Soil class
- M
- Median house price
- $3.5M–$8.0M
- Home era
- 1880s–1940s heritage
- Typical price range
- $150,000 – $300,000+
- Typical timeline
- 4–6 months design to handover
- Approval pathway
- CDC via NSW Affordable Rental Housing SEPP (10–15 days)
Want a real number for YOUR block — not a generic estimate?
Free site assessment, fixed-price contract, line-itemised quote within 48 hours. No high-pressure sales — just a real builder talking real numbers.
How It Works
From First Call to Final Key
Granny flats get underestimated. A lot of builders treat them as a kit-home product. We don't. Your Greenwich block has a main dwelling, a driveway, service connections, trees, and neighbours — the secondary dwelling gets designed around those realities.
⏱The 60m² SEPP cap is not a suggestion. Every millimetre gets used — kitchen, bathroom, laundry, living, bedroom, storage — with the envelope tuned for Greenwich's sun and prevailing breeze. Real rooms, not compromise spaces.
⏱CDC gets lodged through a private certifier the week design locks in. 10–15 business days later, slab starts. The trades sequence tight because the footprint is small — one plumber, one sparkie, one tiler, one programme.
⏱Handover gives you a genuinely rentable second home. Separate meter, independent hot water, standalone bathroom, full kitchen. Ready to lease on handover day, not a 'studio' that needs another $20K of finishing.
⏱Quality Promise
Our Greenwich granny flat builds run on CDC fast-track where eligible. 10–15 business days to approval, 12 weeks to handover, fixed price.
Cost Guide
| Item | Estimated Range |
|---|---|
| Standard inclusions (entry level) | $200,000 – $260,000 |
| Upgraded fit-out (stone, A/C, upgraded appliances) | $260,000 – $310,000 |
| Premium finishes (full A/C, landscaping package) | $310,000 – $370,000 |
| Luxury detached with courtyard & deck | $370,000+ |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
Our Team
Oliver Alameri
Founder / Director / Builder · MPropDev · PhD Student
Ahmad Alameri
Accounts Manager
Claire Wendell
Project Manager
Estimate Your Build Cost
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Still got questions? Talk to Oliver directly.
30-min free call — bring your block, your brief, your budget. We'll map out feasibility, timeline, and realistic cost. No sales pitch.
Frequently Asked Questions
Buildana built our granny flat in just 12 weeks. Fast approvals, great communication, and a beautiful final product. Highly recommend.
Fatima Al-Rashid
Liverpool, NSW
We Build Across Sydney
Headquartered in Western Sydney's Fairfield. Active across all 28 metropolitan Sydney LGAs — from Penrith to the Eastern Suburbs, the Hills to the Sutherland Shire.
Last updated: 1 July 2025
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